1 #!/bin/sh
2 # Check Arm64 callgraphs are complete in fp mode
3 # SPDX-License-Identifier: GPL-2.0
4
5 shelldir=$(dirname "$0")
6 # shellcheck source=lib/perf_has_symbol.sh
7 . "${shelldir}"/lib/perf_has_symbol.sh
8
9 if [ "$(uname -m)" != "aarch64" ]; then
10 exit 2
11 fi
12
13 if perf version --build-options | grep HAVE_DWARF_UNWIND_SUPPORT | grep -q OFF
14 then
15 echo "Skipping, no dwarf unwind support"
16 exit 2
17 fi
18
19 skip_test_missing_symbol leafloop
20
21 PERF_DATA=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
22 TEST_PROGRAM="perf test -w leafloop"
23
24 cleanup_files()
25 {
26 rm -f "$PERF_DATA"
27 }
28
29 trap cleanup_files EXIT TERM INT
30
31 # shellcheck disable=SC2086
32 perf record -o "$PERF_DATA" --call-graph fp -e cycles//u --user-callchains -- $TEST_PROGRAM
33
34 # Try opening the file so any immediate errors are visible in the log
35 perf script -i "$PERF_DATA" -F comm,ip,sym | head -n4
36
37 # expected perf-script output if 'leaf' has been inserted correctly:
38 #
39 # perf
40 # 728 leaf
41 # 753 parent
42 # 76c leafloop
43 # ... remaining stack to main() ...
44
45 # Each frame is separated by a tab, some spaces and an address
46 SEP="[[:space:]]+ [[:xdigit:]]+"
47 perf script -i "$PERF_DATA" -F comm,ip,sym | tr '\n' ' ' | \
48 grep -E -q "perf $SEP leaf $SEP parent $SEP leafloop"
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